Separator.



W. D. NASH.

SEPARATOR. I

APPLICATION FILED MAY 23, 1912.

Patented Aug. 26, 1913.

2 SHEETS-SHEET 1.

COLUMBIA PLANDGRAPH CD.,WASHINGTON. u. c

W. D. NASH.

SBPARATOR.

APPLICATION FILED MAY 23, 1912.

Patented Aug. 26,1913.

2 SHEETS-SHEET 2.

F'FIZII:

l l l I Midterm v @Qjwm UNITED STATES PATENT OFFICE.

WALTER D. NASH, 0F ATLANTA, GEORGIA, ASSIGNOR TO ATLANTA UTILITY WORKS,OF EAST POINT, GEORGIA, A CORPORATION OF GEORGIA.

SEPARATOR.

Specification of Letters Patent.

Patented Aug. 26,1913.

To all whom it may concern:

Be it known that I, lVAL'rnR D. NASH, a citizen of the United States,residing at Atlanta, Fulton county, State of Georgia, have inventedcertain new and useful Improvements in Separators, of which thefollowing is a specification.

This invention relates to separators and more particularly to separatorswhich are adapted to separate grains and seeds from sand, dust, dirt andother foreign substances.

The machine is especially adapted for separating cotton seed from thelocks of cotton, shucks and like material.

The objects of the invention are to provide a machine which requires aminimum amount of power to operate, has a high cleaning efficiency, andis simple in construction.

Generally speaking the machine comprises a horizontally arrangedrevolving cylindrical screen which receives the seeds mixed with theforeign substances and carries the same therethrough, the seeds and dirtpassing through the perforations and the locks, shucks, etc., pass outthe discharge end of the screen. The seeds and dirt which pass throughthe perforations of the cylindrical screen fall onto a series ofinclined stationary screens which separate the seeds from the sand anddirt and discharge the seeds onto a suitable conveyer which deliversthem to any desired point.

The novel features of the invention will be apparent from the followingdescription taken in connection with the accompanying drawings, inwhich:

Figure 1 is a side elevation of the machine with a portion of the outercasing broken away to show the arrangement of the screens on theinterior thereof. Fig. 2 is an end elevation of the machine with aportion of the casing broken away. Fig. 3 is a plan of the machine. Fig.4 is a fragmentary section on the line 4--4 of Fig. 1. Fig. 5 is afragmentary longitudinal section through the feeding mechanism and therevolving cylindrical screen.

Referring to the drawing, 10, 11 and 12 indicate the sections of acasing, these sections preferably being in the form of a rectangularprism and taken together constitute a single casing for the machine.Supported in the upper part of the casing formed by the sections 10, 11and 12 is a cylindrical screen 13 formed of sections corresponding withthe casing sections and jointed together by suitable rings 14. At oneend of the screen 13 is a spider 15, in which is secured a driving shaft16 having at its outer end a cone-driving pulley 17. An opening 18 isformed in the end wall of the section 12 adjacent the end of the screen13 and secured to the end wall of the casing is a feeding hopper orspout 19 adapted to feed the material to be screened through the opening18 into the screen 13. The hopper 19 is provided with a bearing 20 forthe shaft 16 and has communication at its top with a feeder box 21 inwhich is arranged a feeder drum 22 having on its exterior a spirallyarranged rib 23. The drum 22 is mounted on a shaft 24, which is arrangedin suitable bearings 25 and 26 in the ends of the box and carries on oneend outside of the box a cone-driving pulley 27. The screen 13 issupported at one end by means of the bearing 20 and may also besupported by suitable guides or roller bearings (not shown) engaging theouter surface of the connecting rings 14. The screen 13 is provided withan internal spirally arranged rib 28 which is adapted to serve as afeeding means for carrying the material to be screened along the screento the discharge end.

Arranged on the exterior of the casing 12, preferably near the topthereof are the brackets 29 and 30 which support bearings 31 for adriving shaft 32. Arranged on the shaft 32 is a cone pulley which drivesthe pulley 17 by means of a belt 34, a cone pulley 35 which drives thepulley 27 by means of a belt 36 and a pulley 37 by means of which theshaft 32 is driven from any suitable source of power. At the dischargeend of the cylindrical screen 13 the section 10 of the casing carries adelivery spout 38. Arranged directly below the cylindrical screen 13 azig-zag passage formed by the series of inclined screens 39 and 40. Thescreens 39 are arranged directly above each other and are spaced apartby the boards 41 which are inclined substantially at right angles to thescreens. The screens 40 are arranged one above the other and so placedrelative to the screens 39, that the material will be alternately thrownfrom one set of screens to the other in its downward passage.

hen the material strikes the screens the sand and dirt will pass throughthe screens and striking the boards 41 or 42 will be thrown to thebottom of the casing at the sides of the zigzag passage. The screens 39and 40 and the boards 41 and 42 may be supported in any suitable mannerby means of upright members 43 arranged at the ends of the sections,these members being secured to the sections. At the bottom of the casingand below the Zig-Zag passage above referred to may be arranged aconveyer of any preferred construction. In the form of the inventionillustrated I have shown a belt conveyer 6% arranged between the sideboards 45 and 4G and passing over suitable pulleys 47 and 48 arranged atthe ends of the casing. The pulley 47 is preferably arranged on a shaft49 supported in bearings 50, 51 and 52. The shaft 49 carries a bevelgear 53 which meshes with a corresponding gear 5 carried by a shaft 55arranged in bearings 56 and 57 and provided with a driving pulley 58.The pulley 58 maybe driven from a pulley 59 on the shaft 32 by means ofa belt 60. The pulley 4L8 may be arranged on a shaft 61 mounted inadjustable bearings 62, this arrangement permitting adjustment of thetension of the belt 4.4.

From the drawings and the above description it will be seen that I haveprovided a machine which is adapted to feed the material to be screenedat any desired rate by adjusting the belt 36 on the cone pulleys 27 and35 and that all of the moving parts of the machine are driven by meansof a single belt from the source of power. The speed of the screen 13may be adjusted within wide limits by means of the belt 34 and the conepulleys 17 and 33. In using the machine in connection with othermachines which operate on the seeds after they have been screened itwill be seen that the separator may be adjusted to screen and feed theseeds at any desired rate. Furthermore, by regulating the speed of thescreen 13 the distribution of the seeds over the inclined screens 39 and40 may be changed to suit any existing conditions. The screen 13 willcarry all of the locks and trash which may be mixed with the seeds tothe spout 38 and the seeds which fall through the screen 13 will bethoroughly cleaned by being alter nately thrown from one side of thezigzag passage, formed by the screens 39 and 40, to the other. Thisarrangement of the stationary screens thoroughly separates the sand anddirt from the seeds and therefore the color of the lint on the seedswill be improved, thereby increasing its value.

The casing may be made of wood or any other suitable material and byforming the same in sections the machine is conveniently arranged forshipping and the size of the machine may be regulated by increasing thenumber of intermediate sections corresponding to the section 11.

Having thus described the invention what is claimed as new is:

1. In a machine of the class described, the combination of a sectionalcasing, cylindrical screens arranged in the upper part of said casingsections, means connecting said screens together whereby they areadapted to form one continuous screen, a plurality of stationary screenscarried by each casing section and arranged below said cylindricalscreens in. zig-zag formation whereby the material is caused to flowfrom one screen to another by gravity, feeding means arranged on one ofsaid casing sections, and means carried by said last mentioned sectionfor operating said feeding means and said cylindrical screen.

2. In a machine of the class described, the combination of a casingformed of separable sections, a cylindrical screen formed of separablesections and arranged in the upper part of said casing, means forrevolving said screen, a plurality of screens carried by each of saidcasing sections and arranged in zig-zag formation and adapted to receivethe material passing through said revolving screen and a conveyerextending longitudinally of the casing and adapted to receive thescreened material from all of said screens.

3. In a machine of the class described, the combination of a casingformed of separable sections, a revolving screen formed of separablesections and arranged in the upper part of said casing, a plurality ofstationary screens carried by each of said sections and arranged inzig-zag formation below said revolving screen, feeding means for saidrevolving screen carried by one of said sections, a conveyer arranged inthe lower part of said casing and adapted to receive the material fromsaid stationary screens, a power shaft carried by the section of thecasing having said feeding means thereon, means carried by said sectionfor operating said conveyer, and means whereby said feeding means andsaid conveyer operating means are driven from said shaft.

In testimony whereof I affix my signature in presence of two witnesses.

WALTER D. NASH.

lVitnesses A. MAcPI-IERsoN YoLE, Rom. E. HARKEY.

Copies 01 this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

